Congratulations on the new move! Last Saturday I introduced 2 new bichirs in my tank as well, a 12 inch sp Koloton & a 14 inch PBB. A ton of slime coat was shed as well - but on Sunday both already started eating. Did a 50% WC yesterday, and fed a little (everyone accepted food), and did a smaller feeding today. PBB has not been eating as much as I expected him to, but that's alright, she's probably just settling herself in.
Zero to very minimal slimecoat shedding after the WC yesterday. Keep us updated, and don't sweat it!